Not just devs, it's really a management problem all round.

Management (top bosses) often seem want the latest ie. Big Data . It doesn't mater it'll cost a fortune and you'll get better results on a single server.

And if the devs are out of control and pushing for %tech% and getting it, that's management at fault. To be a good manager you need to understand what your employees are doing. I've met too many that don't.